Tag Archives: fatty acids

230-242 E. Samadzadeh Ghale Joughi, E. Majidi Hervan, A.H. Shirani Rad and GH. Noormohamadi
Fatty acid composition of oilseed rapeseed genotypes as affected by vermicompost application and different thermal regimes
Abstract |
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Fatty acid composition of oilseed rapeseed genotypes as affected by vermicompost application and different thermal regimes

E. Samadzadeh Ghale Joughi¹, E. Majidi Hervan¹*, A.H. Shirani Rad² and GH. Noormohamadi¹

¹Department of Agronomy, Science and Research Branch, Islamic Azad University, Tehran, Iran
²Department of Agronomy, Seed and Plant Improvement Institute, AREEO, Karaj, Iran
*Correspondence: majidi_e@yahoo.com

Abstract:

Vegetable oils with a high relative amount of unsaturated fatty acids are of great significance for human health. Hence, in a 2-year factorial split plot experiment, the effects of different sowing date (optimum (October 17) and late (October 27)), vermicompost (0 and 20 ton ha-1) and genotypes (BAL104, DIE710.08, BAL102, FJL330, FJL290 and Okapi) on the fatty acid composition of rapeseed were evaluated. Rapeseed genotypes and the combination of sowing date and vermicompost application were randomized to sub and main-plots, respectively. The present results revealed that yield, oil percentage and fatty acids composition is affected by sowing dates along with genotypes. However, the unsaturated fatty acid, eicosanoic acid was not affected by interaction sowing date and genotype. Vermicomposting increased the yield, oil percentage, oleic, linoleic and linolenic acids and decrease erucic unsaturated fatty acid. The FJL290 and BAL102 genotypes produced the highest values of grain yield (5,853 and 5,763 kg ha−1, respectively), oil percentage (43.98% and 43.85%, respectively), linoleic % acid (20.51 and 20.37% respectively), oleic % acid (65.23 and 64.93% respectively) and linolenic % acid (7.20 and 7.09% respectively) in comparison to the other genotypes, when they were sown at the optimum sowing date. The FJL290 and BAL102 also accelerated their growth period at the late sowing date. Consequently, oleic, linoleic and linolenic acids had the highest direct and indirect effect influence on grain oil percentage indicating their importance as selection criteria to improve yield and oil quality of rapeseed. Concluding the combination of sowing date, vermicompost and FJL290 and BAL102 lines may be the most favourable cropping strategy for rapeseed production in Iran.

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383-388 S. Cerina, V. Krastina and I. Vitina
Production and Expenses of Enriched Composition Broiler Chicken Meat in Latvia
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Production and Expenses of Enriched Composition Broiler Chicken Meat in Latvia

S. Cerina, V. Krastina and I. Vitina

Research Institute of Biotechnology and Veterinary Medicine “Sigra” of Latvia University of Agriculture, Institūta 1, Sigulda, Latvia; LV–2150, e–mail: sigra@lis.lv

Abstract:

Enriched composition of broiler chicken meat, in comparison with commercial mass production, contains increased levels of ω–6 and ω–3 fatty acids and carotenoids complex, which positively influence human health and prevent risk factors that cause various diseases. The aim of the investigations was to evaluate the possibility of obtaining an enriched composition broiler chicken meat and to evaluate the expenses of production in bio-economic aspects by using vegetable oils that contain an increased amount of ω–6 and ω–3 fatty acids level and an additive of carotenoids complex “Karotinas V”. The feeding trial was carried out with cross ROSS 308 broiler chickens ranging in age from 1–42 days (n  = 300). It was concluded that the combination of oils in broiler chicken feed for producing enriched composition meat is 1.0% flax seed, 1.0% rapeseed and 2.0% soybean oils and 0.1% carotenoids complex. Use of the composition resulted in broiler chicken meat with 27.4% ω–6 and with 8.3% ω–3 fatty acids in total lipids, which is about 3.9% and 3.2 % higher than in the commercial product. Poultry organism metabolic processes are essential factors that determine the carryover levels of fatty acids and carotenoids from feed to meat, and it is impossible to precisely evaluate and calculate these physiological processes in organisms, economically. In the trial, the expense of feed consumption per 1,000 broiler chickens was higher than by using commercial feed but increased the broiler chickens’ live weight, providing a possible 15% increase in total sales revenues for 1,000 broiler chickens. The tested combination of oils resulted in increased levels of ω–6 and ω–3 fatty acids in broiler chickens’ tissue: as a result, income was higher in the experimental group.

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662-667 D. Matt, E. Veromann and A. Luik
Effect of housing systems on biochemical composition of chicken eggs
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Effect of housing systems on biochemical composition of chicken eggs

D. Matt, E. Veromann and A. Luik

Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences,Kreutzwaldi 1, EE51014 Tartu, Estonia; tel: +372 7425 010; e-mail: darja.matt@emu.ee

Abstract:

The aim of this study was to investigate the impact of production system (organic, conventional) on the quality of chicken eggs. Energetic value, carbohydrate, cholesterol, protein, fatty acid, sodium, potassium, phosphorus, dry matter and vitamin contents were evaluated. The mean content of cholesterol was 30%, and potassium 7%, greater in the organic eggs compared with the conventional eggs. No significant difference was found in the content of fatty acids, protein, sodium or dry matter. The organic eggs had considerably lower contents of calcium (2.8 times) compared with eggs from conventional farming. Negligible differences were found in the occurrence of vitamins (vitamin A, vitamin E, vitamin D3). The residues of 45 pesticides and 6 PCB isomers were analyzed in both types of eggs and no residues compounds were found.

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